Running a Python Script from Command Line

Pseudo Code for Running a Python Script

Objective:

To execute a Python script from a command line interface.

Pseudo Code Structure:

1. Define the Python Script:

   • Include the necessary logic within the script.
   • Ensure the script is saved with a .py extension.

2. Prepare for Execution:

   • Verify a Python interpreter is installed.
   • Ensure the script has necessary permissions for execution.

3. Execute the Script:

   • Use the command line to navigate to the script's directory.
   • Run the script using the Python interpreter command.

Pseudo Code:

Step 1: Define the Python Script

• Create a Python file example_script.py with desired functionality.
• Example content of example_script.py:

# example_script.py

# Function to print a greeting message
def greet(name):
    print(f"Hello, {name}!")

# Main execution: call the greet function
if __name__ == "__main__":
    # Call greet function with a sample name
    greet("Data Scientist")

Step 2: Prepare for Execution

• Verify Python is installed on your system.

# Open Command Line Interface (CLI)
open CLI

# Check Python version
python --version

• Ensure the script has the correct permissions (optional for Unix-based systems):

# Make the script executable (optional)
chmod +x example_script.py

Step 3: Execute the Script

• Navigate to the directory containing example_script.py.

# Change directory to where 'example_script.py' is located
cd path/to/script/directory

• Run the script using the Python interpreter:

# Execute the script
python example_script.py

# For python3
python3 example_script.py

Notes:

• Ensure that the Python interpreter path is correctly set in your system's environment variables.
• Depending on the operating system, commands might vary slightly.

Benefits:

• This process allows the execution of Python scripts efficiently from the command line.
• It is foundational for automation and integrating Python scripts in larger workflows.

Recommendation:

For those looking to enhance their skills, consider courses offered on the Enterprise DNA Platform.